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</style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr /><td align="left" valign="top" width="32"><img align="left" border="0" height="32" src="images/rb-logo.png" width="32" /></td><td width="1">&#160;&#160;</td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a>&#160;&#183; <a href="classes.html"><font color="#004faf">All Classes</font></a>&#160;&#183; <a href="modules.html"><font color="#004faf">Modules</font></a></td></table><h1 align="center">QObjectCleanupHandler Class Reference<br /><sup><sup>[<a href="qtcore.html">QtCore</a> module]</sup></sup></h1><p>The QObjectCleanupHandler class watches the lifetime of multiple
QObjects. <a href="#details">More...</a></p>

<p>Inherits <a href="qobject.html">QObject</a>.</p><h3>Methods</h3><ul><li><div class="fn" /><b><a href="qobjectcleanuphandler.html#QObjectCleanupHandler">__init__</a></b> (<i>self</i>)</li><li><div class="fn" />QObject <b><a href="qobjectcleanuphandler.html#add">add</a></b> (<i>self</i>, QObject&#160;<i>object</i>)</li><li><div class="fn" /><b><a href="qobjectcleanuphandler.html#clear">clear</a></b> (<i>self</i>)</li><li><div class="fn" />bool <b><a href="qobjectcleanuphandler.html#isEmpty">isEmpty</a></b> (<i>self</i>)</li><li><div class="fn" /><b><a href="qobjectcleanuphandler.html#remove">remove</a></b> (<i>self</i>, QObject&#160;<i>object</i>)</li></ul><a name="details" /><hr /><h2>Detailed Description</h2><p>The QObjectCleanupHandler class watches the lifetime of multiple
QObjects.</p>
<p>A QObjectCleanupHandler is useful whenever you need to know when
a number of <a href="qobject.html">QObject</a>s that are owned by
someone else have been deleted. This is important, for example,
when referencing memory in an application that has been allocated
in a shared library.</p>
<p>To keep track of some <a href="qobject.html">QObject</a>s,
create a QObjectCleanupHandler, and <a href="qobjectcleanuphandler.html#add">add</a>() the objects you are
interested in. If you are no longer interested in tracking a
particular object, use <a href="qobjectcleanuphandler.html#remove">remove</a>() to remove it from
the cleanup handler. If an object being tracked by the cleanup
handler gets deleted by someone else it will automatically be
removed from the cleanup handler. You can delete all the objects in
the cleanup handler with <a href="qobjectcleanuphandler.html#clear">clear</a>(), or by destroying
the cleanup handler. <a href="qobjectcleanuphandler.html#isEmpty">isEmpty</a>() returns true if
the QObjectCleanupHandler has no objects to keep track of.</p>
<hr /><h2>Method Documentation</h2><h3 class="fn"><a name="QObjectCleanupHandler" />QObjectCleanupHandler.__init__ (<i>self</i>)</h3><p>Constructs an empty <a href="qobjectcleanuphandler.html">QObjectCleanupHandler</a>.</p>


<h3 class="fn"><a name="add" /><a href="qobject.html">QObject</a> QObjectCleanupHandler.add (<i>self</i>, <a href="qobject.html">QObject</a>&#160;<i>object</i>)</h3><p>Adds <i>object</i> to this cleanup handler and returns the
pointer to the object.</p>
<p><b>See also</b> <a href="qobjectcleanuphandler.html#remove">remove</a>().</p>


<h3 class="fn"><a name="clear" />QObjectCleanupHandler.clear (<i>self</i>)</h3><p>Deletes all objects in this cleanup handler. The cleanup handler
becomes empty.</p>
<p><b>See also</b> <a href="qobjectcleanuphandler.html#isEmpty">isEmpty</a>().</p>


<h3 class="fn"><a name="isEmpty" />bool QObjectCleanupHandler.isEmpty (<i>self</i>)</h3><p>Returns true if this cleanup handler is empty or if all objects
in this cleanup handler have been destroyed; otherwise return
false.</p>
<p><b>See also</b> <a href="qobjectcleanuphandler.html#add">add</a>(), <a href="qobjectcleanuphandler.html#remove">remove</a>(), and <a href="qobjectcleanuphandler.html#clear">clear</a>().</p>


<h3 class="fn"><a name="remove" />QObjectCleanupHandler.remove (<i>self</i>, <a href="qobject.html">QObject</a>&#160;<i>object</i>)</h3><p>Removes the <i>object</i> from this cleanup handler. The object
will not be destroyed.</p>
<p><b>See also</b> <a href="qobjectcleanuphandler.html#add">add</a>().</p>
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